Zobel, L. P. (1980). The travel writer's handbook. Writer's Digest Books.
Dyfyniad Arddull ChicagoZobel, Louise Purwin. The Travel Writer's Handbook. Cincinnati, Ohio: Writer's Digest Books, 1980.
Dyfyniad MLAZobel, Louise Purwin. The Travel Writer's Handbook. Writer's Digest Books, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.